US1075492A - Metal-working machine. - Google Patents

Description

T. P. PAYNE. METAL WORKING MACHINE.

APPLICATION FILED OCT. 22, 1909.

Lwfi Patented Oct. 14, 1913.

12 SHEETSSHEET 1.

He. J.

T. P. PAYNE.

METAL WORKING MACHINE.

APPLICATION FILED 001*. 22, 1909.

Lflwfi a Q Patented Oct. 14, 1913.

12 SHEETSSHEET 2.

'FIG. 2.

12 WITNESSES: y Q OWVENTOR;

ATTORNEY.

T. P. PAYNE.

METAL WORKING MACHINE.

APPLICATION FILED OCT. 22, 1909.

FIG, 5

Patented Oct. 14, 1913.

12 SHEETSSHEET 3 FIG. 17

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WITNESSES:

T. P. PAYNE.

METAL WORKING MACEINE.

Patented Oct. 14, 1913.

12 SHEETS-SHEET 4.

APPLICATION FILED OCT. 22, 1909.

ENTOR;

I ATTORNEY.

T, P. PAYNE.

METAL WORKING MACHINE.

APPLICATION TILED 00122, 1909.

,UY5fi92 Patented Oct. 14, 1913.

12 SHEETS-SHEET 6.

(\mu' m m M 2) will/11111 WtTNESSES: INVENTOR:

ATTORNEY.

T. P. PAY-NE.

METAL WORKING MACHINE.

APPLICATION FILED 001. 22, 1909.

11 @75 492. Patented Oct. 14, 1913.

12 SHEETS-SHEET 7..

WWNEssEs-f m iNVf-ZNTOR: WZ$5ZZQL W 96m 5 W M ATTORNEY 12 SHBBTSSHEET 8.

Patented Oct. M, 1913.

T. -P. PAYNE.

METAL WORKING MACHINE.

APPLICATION FILED 001'. 22, 1909.

g mm ga VENTOR'.

iv B 5N N3 a. N. Mb To hum: 010w T. P. PAYNE.

METAL WORKING MAGHINE.

APPLICATION IILED 00122, 1909.

12 SHEETS-SHEET 9.

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T. P. PAYNE. METAL WORKING MACH TNE. APPLICATION FILED 00122, 1999.

Patented Oct. 14, 1913.

12 SHEBTSSHEET 10.

AT ORNEY.

T. P. PAYNE. METAL WORKING MACHINE.

APPLICATION FILED O0T.22, 1909.

Patented Oct. 14, 1913.

12 SHEETS-SHEET l1.

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T. P. PAYNE.

METAL WORKING MACHINE. APPLICATION FILED 001". 22, 1909.

Patented Oct. 14, 19131 lmm z.

12 SHEETS-SHEET 12.

r\ NVENTORI u. f Y

ATTORNEY.

- tive to the means for operating thereon; to

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METAn-wonnma naonmn Specification of Letters Patent. Application filed qctober 2 2, 1g09, Serial No. 523,974

Patented Oct. it, 31913.

To all whom it may concern: i r

' Be it known that I, THnonoRn P. PAYNE,

a citizen of the United States, residing at The invention relates to machines for the fabrication of metal shapes, and more particularly to, machines for placing and piercing holes in beams, plates and other structural shapes, although certain of its aspects the inventionmay be useful inother connections.

Objects of the invention are to provide a machine for rapidly performing operations 1n predetermined positions by tool equipped means upon work progressed other work, without a preliminary laylng,

out; toprovide for mechanical or automatic handling of the workfin positioning it relaprovide control ofthe devices for moving the work whereby they are absolutely, and it desired, automatically controlled; to position the work so that successive holes or groups of holes, or other operations, will be in proper relation to each other and to the work without the usual laying out upon the material itself; to, provide for mechanical or automatic centering and adjusting of the, work upon the machine a d relatively to the piercing devices or other tool equipped-means; to provide for automatic supp y of work to the machine up to its capacity; to provide for a mechanical and automatic. removal of the work from the ma- I the operations thereon are completed;. tc provide for successively repeating the placing of ho1es'automat1cally by the machine; to provide for automatic control of one, grouppf mechanism by another to, bring them nto proper sequential operative relation with the work; to provide a machinerequiri-ng a f labor. and of attendance for the work done and with a; minimum of preparatory work;

- to prevent other than a proper sequential operation of the machine by an'operative;

to provide for making in rapid succession grou s of holes varying in number and in ppsition with respect to each-ether; toprothrough the machine; to provide a machine ,trcl for 'theretaining vide mechanism for easily and rapidly utilizing difierent'piercing devices successively on the work; to provide for making the piercing of a shape and purely mechanical operation succeeding immediately on the other steps in, manufacture.

Other objects of invention will in part be obvinus and will in part more fully appear herein.

The invention consists in the novel. parts, mechanisms, combinations and improvements herein shown and described,

herein and forming a part hereof, illustrate herem vention.

Of the drawings: Figuresl to 3 inclusive, are a single plan of a machine constructed in accordance with the principles oi; the invention, the figures running. from' leftto right Fig. 4 is a transverse section on the line AB of Fig. 2-lO0ki,I 1 toward the right with certain parts-'omitte for thesake of clearness; Fig. 4 shows the other end of chain 14 and'theassociated parts;v Fig. 49 s a ragme alv d tail, of he ma a o mfi fi; F gs an 6 are fragmentaryfelevations showing the operation i t e, arm whi h present the wer to the progressmgjmeans; Fig. 7 is a fragdog- 105 during-'the'feeding oi the work; Figs. 8 to 11, inclusive are view O rthe ing means-Fig. 1.2 is a fragmentary sectional view substantially en the line C-.

rre e s i wa e- 3. is ee -e with arts n s'ection,' h mg certain. ont l 1: the progres i g, means; ig 114; 'is a detail view showi g he," c mpen ati g evices for positioning the work on the'progreasing means; F g 1. 6, 17 an .7, are fragmentary views of one fprm cf distance determining devices; Fi'gQiS is a detail view The aceompanymg drawings, referred to mentary detail; illustrating the action of the illustrating especially the driv for the of another form of distance detem ining dean embodiment of the invention, the same serving in connection with the description to explaln the principles of the inf Series onnect the progr ssing mean th an elevation showing particularly the tool equipped means with its housing and operating means and their relation to the progressing means; Fig. 24 is a fragmentary plan showing particularly the tool equipped means and its relation to its actuating means, portions of the housing being broken away for clearness; Figs. 25 to 29 inclusiv'e, are fragmentary views showin details of the tool equipped means and t eir associated parts; Figs. 30 to 34: inclusive, are details of the controlling means a for the trains of punch and die blocks; Fig. 35 is a vertical section substantially on the line E-F of Fig. 1, with certain parts removed, showing the operation of the work discharging devices; Fig. 36 is a fragmentary view of certain mechanism connected to the fluid pressure cylinders; Fig. 37 is a detail of one of the valve controlling mechanisms; Fig. 38 is a detail of the work contacting head of bridge 230; and Figs. 39 to 41 are details of various controlling mechanisms.

Referring to the accompanying drawings, which illustrate by way of example one embodiment of the invention, means are provided for supplying the work in the form of structural shapes, or other material to be operated upon, to the machine. The form of such means shown comprises devices for successively supplying shapes to suitable progressing means which in turn presents the work in proper position to be operated upon by the tool-equipped means and progresses the work so that said means may act upon various parts thereof as selected. The supplying means in accordance with one feature of the invention includes devices for receiving the work as applied thereto more or less at the convenience of the operatives or of a mechanical source of supply and of delivering it to the progressing means, either directly or indirectly, when-' ever said means is ready to receive it. The form of supplying means shown herein (see especially Figs. 3 to 6) comprises rails 1 and sprocket chains 2, which may be continuously driven by any suitable means, and which are provided with engaging lugs 3, saidchains passing over suitable sprocket wheels 4 which may be loosely mounted on the shaft 5. The work may be slid along the rails as it is progressed by means of the lugs 3 engaging it.

The illustrated form of supplying means further comprises a conveyer for receiving the work from the devices just described and supplying them in the present instance not directly to the progressing means but to transferring and positioning means, which in turn presents said work to the progressing means whenever the progressing means is ready to receive it, and may, if desired, also be called mto action by the progressing means coming or belng 1n receiving position. The illustrated form thereof (see Figs. 3 to 7) comprises a series of sprocket chains 8, provided with engaging devices, or lugs 9, said chains passing over sprocket Wheels 10, which may be conveniently carried loose on the shaft 5. Said sprocket chains 8 are also 'shown passing over sprocket wheels 11, which may be fixed on a shaft 12. A suitable drive is provided for said conveyer, and as shown herein comprises a sprocket wheel 13, likewise fixed to shaft 12, said sprocket wheel carrying the sprocket chains 14:. The sprocket chains 14 are carried by a sprocket wheel 15 fixed on a shaft 16.

Suitable means are provided for operating the supplying means in harmony with the movements and positions of the progressing means, and also to provide for the control or government of the operations of said supplying means by the progressing means, or by the operator, as desired. In the illustrated form of such means a driven gear 18 is connected through a suitable clutch 19 to the shaft 16 carrying said sprocket wheel 15. Pivotally mounted on a suitable support at 21 is shown an arm 20 having in its end a spring pressed pin 22 in cooperative relation with a lug or tooth 23 on clutch 19. A spring pressed pin 24 is shown mounted on said arm 20, and resting on a lug 25. This serves to hold arm 20 in position to prevent, rotation of shaft 16, and also to cause the return of arm 20 to engaging position upon the escapement of said shaft. Depending from arm 20 is a member 26 having a face in position to be engaged by a spring pressed dog 27, carried on a pivotally mounted arm 28. Said parts may be proportioned and arranged so that a single release of the clutch will cause a single rotation of shaft 16 which in turn may serve to carry the lugs 9 a suflicient distance to deliver a piece of work to the progressing means. The form of construction shown permits, through the yielding of dog 27,.and the impulsion of pin 24:, the quick return of arm 20 to prevent more than a single rotation of shaft 16, and also allows the later return or idle movement of arm 28. It will be obvious that should there be hesitation or delay in clutching, pin 22 by rea son of its spring projecting it outwardly as soon as it is moved out of engagement with the tooth or lug 23, will prevent the return of arm 20 until the passage of engaging lug 23.

Suitable means for causing the arm 28 to actuate the retaining arm 26 are provided, and as shown herein comprise a link 29 pivoted to arm 28 and which may be controlled by the hand of the operator, if desired, as for instance by a lever 30.

The progression of the work from the conveyer to the receiving or transferring means heavy bodiment certain of the devices used to suption with the progressing emma may be aided by gravity, if desired, and such a form is shown herein, the ends 0 the rails 1 being inclined for this purpose. In accordance with certain features of the invention means are provided for transferring the work from the conveyer to the work progressing means, although. so far as concerns other features of the invention the conveyer may deliver direct to the work progressing means. Certain aspects of the invention provide means for supporting the work by rolling contact therewith while it is beingiprogressed, which will be found especially advantageous both where the work is or large or both. In the present emport the work when it is in operative relameans, to be progressedand positioned relatively to the tool equipped means, are also used to transfer said work from the conveyer to said work progressing means. In the form of such means comprised in the present embodiment there are shown members and 51 relatively movable toreoeive the work and also to engage and support it. Said members are i also given a common movement for transferring the work from the conveyer to the work supplying means to the work progressing means. Each pair of the members 50 and 51 are shown pivotally connected together by suitable means, as by lugs 56 on the members or arms 50 in whlch lugs rods 49 on the members or arms 51 are journaled. This serves to permit each pair of arms 50 and 51 to swing toward and from each other. At their other ends the arms may be provided with rollers 52 and 53 which engage and support the work by therewith. The pair of arms'may thus move apart to receive the work and close together to engage and support it, as is shown in connection with the I beam in Figs. 4 to 6.

Forthe purpose .of transferring the work from the supplying to theprogressing means in the present embodiment the arms 50 and 51 are shown movable together-into operative relation successively with the conveyer and the progressing means. It will be understood certain pairs of arms 50 and 51 need not be mounted forsuch movement together, if desired, and this may be the case with certain pairs thereof located near the central part of the machine and which do not take part in receiving or discharging the work, but do support and direct the work as it is progressed and presented to the tool equipped means to be operated upon thereby. This common movement of the pairs of arms in this embodiment is rotatory and the form of means for eflecting it shown herein comprises a shaft 54 upon which the arms 50 are fixed. Fixed to the shaft 54 are shown gear sectors 57 In operative relation to sectors 57 are worms 58 fast to shaft 59,

rolling contact admit said fluid to and said shaft carrying miter gears 60. Meshing with gears 60 are gears 61 carried fixed on a haft 62 which may be driven by means of gears 63. Bevel gears 64 and 65 are shown mounted to freely rotate about shaft 66, which is in turn coupled to a suitable source of power such as a motor 67. Said gears are pro 'ded with surfaces arranged to be operatively connected with a clutchin member 68 slidable on but rotatable wit said shaft 66. Fixed with relation to the gear 63 is a beveled pinion 69 meshing with gears 64 and 65. It will be understood that, with a certain direction of rotation of the power provided, the driving contact of clutch meniber 68 with will through the hereinbefore described mechanism give a certain rotation to worm 58 and, for example, move members 50 and 51 to the work receiving position. By reversing the member 68 to operatively connect gear 6 1 with the source of power, the opposite direction will be given to worm 58, and the members 50 and 51 will be moved to the position where the work is in operative relation to the progressing means. Fig. 5

illustrates the former position of the arms 50 and 51, and Fig. 6 illustrates the latter. The neutral or intermediate position of clutch members 68 may be arranged so that it is out of contact with both the gears 64: and 65, thus permitting the arms 50 and 51 to remain in any desired position.

Suitable means for actuating and holding the clutch member 68 in the neutral and in each .of the other positions are provided, and are shown herein as comprising an annular recess 7 0 (see Fig. 3) in said member 68 having in operative relation therewith a yoke 71 fast to shaft 7 3, and provided with rolls 7 1, engaging said recess. Fixed to shaft 7 3 is an arm 75 (see Fig. 2) having pivotally attached thereon a rod 7 6, the other end of which is suitably connected to a piston rod 77, carrying piston 78, working in cylinder 79. A fluid under pressure may be provided for the actuation of the mechanisms just described, and means for controlling said fluid under pressure are shown in the form of valves and 81, arranged to exhaust it from the respective ends of the cylinder. Means may also be provided for returning the piston and coiiperative clutch member to intermediate or normal position, and in the embodi ment illustrated are shown in springs 82 and 83, arranged conveniently coiled about a piston rod 77, and in position to act against the respective faces 'of the piston 78 and the opposed ends of the cylinders 79. If desired these springs may be in a balanced or relaxed condition when the piston is in the normal or intermediate position. Means are provided for positively retaining in position .said clutch member 68 when disengaged from the gears 64 and 65 (see Fig. 36), such means being shown in the form of a pivoted, spring-pressed latch 84, suitably mounted in position to engage a collar 86 fast on the piston rod 77. Said latch is in operative relation to a valve rod 80, so that a movement of the latter tends to raise the said latch 84 out of the path of the collar 86. There is similarly arranged a pivoted spring-pressed latch 87 suitably positioned to engage a collar 89 which is fixed on said rod 77. The latch 87 is conveniently placed adjacent to the valve rod 81 so that a motionof' said rod 81 will tend to raise the latch 87 out of the path of the collar 89. The operation of this valve and clutch mechanism is substantially as follows: A movement of valve will cause the fluid under pressure to be admitted to the rear end of cylinder 79, as shown in Fig. 2, thus causing piston 77 to move in the direction of the front of the machine. The latch 84 is lifted by the movement of the valve rod 80 permitting the collar 86 to pass thereunder. The spring 83 will be placed under tension between piston 78 and the cylinder head adjacent, by the fluid under pressure. The movement of piston 78 serves to rock shaft 73, thereby connecting the adjacent face of clutch member 68- with the gear 65. Upon reversing valve 80 the fiuid under pressure is released, and the piston, acting under the impulse of the sprin 88, will be returned to an approximate mi -position, the latch 84 is permitted to be placed, under impulse of its spring, in position to engage collar 86, and with the cotiperation of latch 87, which engages collar 89, arrest piston 77 in its intermediate position. Thus the clutch member 68 is thrown out of engagement with gear 65 and is held in this position. The operation of the mechanism for clutching member 68 with gear 64, and the release thereof, by means of valve 81, is substantially the same and need not be described in detail.

Suitable means are provided for governing the relation of the members 50 and 51 to each other in themvorkengaging and sup porting position, and for varying that relation to accommodate, or cotiperate with work of different kinds. Said means are also designed while accomplishing the foregoing to also permit the opening or work receiving movement of the arms. The form of such means-illustrated comprises spring devices acting on said arms and devices acting against said springs and movable to control the approach of the arms to each other. A spring is shown in tension between an arm 50 and its companion arm 51. A screw 96 is shown threaded into the arm 51 and bearing on a face 97 on the arm 50. Means are likewise shown for positioning said arms to receive the work, and in the form thereof shown a pin 100 on arm 57 engages with a stop 101 on the machine frame as shown in Fig. 5 of the drawings.

Means are provided in accordance with one aspect of the invention for insuring that 70 the work will not be delivered to the arms 50 and 51 until they are in position to receive it. The form of such means shown herein comprises one or more pivoted dogs 105 suitably mounted with respect to said members 50 and 51 and adjacent to'the rails 1, and carrying a spring 106 arranged so as to hold said dog in either of two positions. Conveniently placed to stop said dog in one position is pin 107 and 108 to stop it in another positlon. Pin 109 on said dog 105 is suitably located to cotiperate with a projection 110 carried on the member 50. The position. of the dog 105, during the approach of arm 50 to the receiving position may be such that the projection 110 idly assumes a position adapted to trip said dog 105 as the work is carried on said arms to the progressing position. It being understood that the work in its passage upon rails 1 has caused the dog 105 to be thrown so that said dog is placed in the proper position to be returned by projection 110 as described. It will be understood that in certain as ects of the invention and wit-h certain kinds of work, the 5 dog or any equivalent may be dispensed with and likewise in certain aspects of the invention and with certain kinds of work, the intermittent conveyers 8 may be dispensed with, or both may be used together as shown in. the present embodiment.

Means for transversely positioning, or centering, the work with respect to the toolequipped means are provided by the inven tion. The form of such means shown herein comprises a series of pivoted arms and 116 arranged. to engage the work on either side thereof. A series of blocks 117 are fixed to shaft 54 and a lug on said block carries a rod or pintle 118 on which the ar 1143 116 is pivotally mounted. The corresponding arm 115 is shown mounted loosely on shaft 54 to turn thereon. A'sprlng 120 is shown acting between the arm 115 and block 117 and connected to a pin 119 in the block 115 and a pin 121 on the arm 115. The form of devices for engaging the work to aline it comprises rollers 123 and 124 shown carried on the arms 115 and 116. A spring 122 is shown herein for in an approximately normal relation. It may be convenient to maintain the rollers 123 and 124 more or less separated from each other and for this reason spring 122 is shown fully compressed or relaxed, but hav- 125 ing its ends connected to the arms by the loop and pin to permit the lessening of the space between said rollers 123 and 124 without buckling the spring. I

Suitable means for governing the alining holding arms 115 and 116 12c increase action of the arms 115 and 116 are provided. In accordance with one feature of the invention fluid pressure means are provided for this purpose, and the illustrated form thereof com rises a series of cylinders 130. Within sai cylinders 130 are pistons 131 having their rods 132 and 133 projecting from the opposite ends of said cylinders. The end of the rod adjacent to the projecting members 135 and 136 of the arms 115 and 116, respectively, carries disk 134 so positioned as not to interfere with the movement of the arms 115 and 116when the shaft 54 is rocked, but movable under the action of the fluid pressure in the cylinders-to pass between the members 135 and 136 to push them apart and brin the disks 123 and 124 into contact with t e Work to accurately aline it as shown in Figs. 8 and 9. A port 138 allows the admission and-exhaust of the fluid under pressure, a valve '139'suitably placed, controls said "fluid through a port and a pipe 140. An arm 145 is operatively attached to said valve 139, and connects with other mechanisms as will appear hereinafter. For returning the iston and its disk to normal position, a spring 144 may be conveniently coiled about the end 132 of the rod 133 acting between the adjacent end of the cylinder 130 and a collar 141 fixed 'on'said rod 132. For moving the arms 115 and 116 apart to receive "the work, as shown in Fig. 5 there may be provided a. pin 142 on the arm 116, arranged to co-act with projection 143 to move the arms apart against their spring. In the present embodiment means are also provide. for permitting certain of the positioning or ali-ning means to accom-' modate inequalities or deviations from a true shape, as may sometimes be present in the work. The present embodiment shows a form of such means comprising spring controlled arms 154 and 155 carrying the rollers 123 and 124. Pivots 150 and 151, carrled on arms 152 and 153, corresponding to arms 115 and 116, support members 154 and 155 respectively. One end of each of said members 154 and 155 has fixed thereto springs 156 and 157, the other endsbeing fast to pins on arms 152 and 153 respectively. Excepting for the ability to yield for the defects mentioned the control and action of centering is substantially similar to that previously described in connection with the arms 115 and 116. I

The invention in one of its aspects provides means for controlli the action of the transferring meanscontr dlled by or dependout on the work being in, or coming to, po-

sit-ion to becarried through the machine. In

this embodiment'this is made dependent on the work being fed up tothe transferring means to be by it handed over to the progressin means. shown erein comprises an arm 160 suit- The .form of such meansably mounted and arranged to be opera tively connected with a valve rod 81.. Said arm 160 has ivotally connected thereto one end of rod 161, the other end of which is carried by, an arm of a bent lever 162 pivotally mounted at 163. On another arm of said lever 162 is suitably connected a rod 164, which is pivotally fastened to a lever j 165, conveniently arranged in operative relation with the dog 105 (see Fig. 6-). A11

arms 51, engages a grooved collar 167 fast on the rod 161. It will be understood that the valve 81 when thrown in position by one of-said means will remain in said position until operated on by the other of said means.

For the reverse movement of the transferring means the valve rod has pivotally connected to it a pivoted arm 220 which 15 pivoted to one end of the :rod 221, which is operatively connected to an arm of the.

three-armed lever'222. Another arm' of lever 222 has pivoted to it a rod 223, which is operatively attached to an arm 224 car rying a spring pressed dog 225,arranged to be operated by the regressing means this instance the bri'ge 230') in one direce t'ion only. Lever 222 also connects with one end of :rod 226, the other end of said :rod being pivotally fastened to an arm 227=which is fast on a rock fast on-said shaft 228, is suitably placed in' the path of one of-the arms 50 "(see Fig. 5), and adapted to be engaged thereby. This valve mechanism is also arranged to remain in the position to which it is thrown by on action, until reversed by the other. Valves 80 and 81 are shown also adapted foremanual operation if so desired.

It will be understood from the foregoing that the movement of the-progressing means, that is bridge 230, serves to throw valve 86, thus operatively connecting clutch member 68 with the gear 65, and hence connecting the motor 67 with the worm 58 This rocks the series of arms 50 and 51'to' the work receiving position. 0n the approach of said arms to this position, contact with arm 229 causes the reversal of valve 80 and thus disengagesthe said clutch member 68 and the ooiiperating face on gear 65 and bringing the arms the work, after said work has been carried by the lugs 9 of the sprccketchains 8, the further travel of said dog actuates the leshaft 228. An arm 229- to rest in the desired position. Upon the second operation of dog 105 byver 165, which, through the hereinbefore described connectionthrowsvalve 81 to admit the fluid. under pressure :for actuating the piston 78 in the desired direction. Clutch member '68 is thereby 'made to engage the coacting ace of gear 64 thus connecting motor 67 with worm '58. The arms '50 and 51 are moved to the other extreme position, bringing the work inthe operative posit-ion 5 arm 166 arranged H]. the path of one of the for actuation by the progressing means. As the said arms 50 and 51 approach this latter position, the arm 229 is contacted and valve 81 is reversed, exhausting the fluid of progressing means includes a member fixed with respect to the actuating or driving means, and being operatively connected to suitable'distance determining means for accuratelyand positively placing the work within range of the tool-equipped means for operation thereon, and in accordance with a pre-determined setting. Also a member relatively movable with respect to said first member, said relative movement being for the purpose of firmly placing the work against this first member and then acting to retain same in position therewith during progression. For this pur ose there are provided members 170 and 1 1, having formed along one edge of each a series of teeth 172 and 173, respectively. Fixed to members 170 and 171 is a bridge 174 carrying, if desired, a projecting head 175, suitably shaped for forming an abutment for the Work, and against which said work is firmly held during progression with reiation to the toolequipped means. The free 176 of said head 175 bears a definite relation to both the said tool-equipped means and the means for controlling and positioning the work. In the present embodiment the connection between the work and the driving means is effected through the racks 1-72 and 173. Worms 177 and 178 are shown in mesh with said racks 172 and 173, respectively. The worm 177 is connected through the gear train 179, with the gear 180 fixed to a clutchmember-181 in operative relation to a clutch member 182, and freely mounted upon shaft 183, which has keyed to it the member 182.

Fixed with relation to said clutch member 182 is a gear 183 which meshes with a wide faced gear 184 fast to shaft 185. Carried on said shaft 185 and fast thereto, is' a bevel pinion 186 in mesh with bevel gears 187 and 188, freely rotatable on shaft 189. Slidable on shaft 189, but arranged to rotate therewith, is a clutch member 190, suitably placed for co-acting, when desired, with faces formed on the gears 187 and 188 to clutch same. Shaft 189 is arranged to be coupled to a suitable source of power, which in the present embodiment is shown as a motor 191. A yoke 192, operatively connected to a recessed portion of clutch member 190, has pivotally attached thereto a rod 193 suitably connected to a piston 194, working in cylinder 195, Said cylinder being adapted for the use of fluid under pressure, a valve 196 serving to control the admission and exhaust of said fluid. A spring 197, shown coiled about piston rod 198, and acting against the piston face and the opposed cylinder end, serves to actuate the piston in one direction. It will be understood that the spring 197 acts to keep the clutch member 190 in engagement with gear 188 which, for example, progresses the members 170 and 171 and other parts hereinbefore and hereinafter described, while the piston, when actuated by the fluid under pressure, will cause the engagement of gear 187 by clutch member 190 for the reverse travel of said parts.

In fixed relation with worm 178 is a gear 200 driven from the gear train 201. In mesh with a gear in said train 201 is a gear 202, fixed to which is one of the miter gears 203 the other of said gears being fast on shaft 204. Said shaft 204 has fixed thereto miter gear 205 meshing with gear 206 which is fast to gear 207 in the train 179.

Means are provided for clutching members 181 and 182, such means being shown in part, in the form of a cylinder 210 suitably arranged for using fluid under pressure. A piston, operating therein, has conveniently coiled about its piston rod a spring coiled between either side of the piston and the adjacent cylinder head (which are not shown in detail being substantially thesanie as the arrangement in connection with cylinder 79 shown in Fig. 2), and adapted for returning said piston after it has been actuated by the fluid under pressure. Means are provided for maintaining said piston and clutch member 182 in position corresponding to that of disengagement, indicated generally by numerals 215 and 216, and substantially similar to that shown, in connection with the cylinder 79 (see Fig. 36), and need not be described in detail. A suitable valve 1220 is shown for controlling the fluid under pressure, for the movement of the piston in one direction, while valve 1221 is shown for a similar control of the piston in the opposite direction. A recessed collar 1222 is operatively connected with a yoke 1223, pivotally mounted, and connected by means of link 1224, to a yoke 1225, said yoke being in operative relation to a recessed collar 1226 fast to the shaft 183.

Means are provided, which to ether with other functions, serve to carry t e work to,

and press same firmly against head 175 mounted on bridge 17 4, and to hold said work thereto, as it is progressed through the machine. Said means comprise a bridge 230 which may be attached to and detached from the toothed members and 171.

The

members 170 and 171, and the two bridges 174 and 230 constitute a carriage for handling the work. As shown herein the bridge 230 is provided with pivoted dogs 231 and 232, journaled on said bridge 230, said dogs being acted on by springs 233 and 234, respectively, which tend to cause the engagement of the said dogs with the racks 17 2 and 17 3 of themembers 17 0 and 171. It will be understoo d that the construction of the toothed dogs 231 and 232 is such as to permit said bridge 230 to move toward the bridge 174, when desired, and as the work is firmly pressed against the head 17 5' of said bridge, the dogs will positively lock said bridge 230 to members 170 and 171, and keep it at rest with respect to'bridge 174 during .the progression movement. Also relative movement in the opposite direction will be prevented until the dogs 2'31 and 232 arethrown out of engagement with the rack teeth on the members 170 and 171.

The invention in certain of its features provides for moving the bridges, or equivalent parts, of the work progressing means independently of each other. In the present embodiment means are provided for moving the bridge 230 along its path of travel in both directions, independently of the bridge 174, when desired. The form of such means shown herein comprises cables 240 and 241, working over pairs of loose pulleys 242 and 243, coiled about driving drums'244 and 245 and returning to fastenings on bridge 230 over guide pulleys 246 and 247. Adjust ments for regulating the proper tension of said cables 2'40 and 241 may be provided, if desired, such as turn buckles 248 and 249.

Suitable means for effecting the independent movement of bridge 230 are provided comprising drums 244 and 245 fastened to a shaft 250, which also has slidably mounted thereon, but rotatable therewith, a clutch member 251 suitably arranged to be actuated in one direction by a spring 252, under tension. In operative relation to said clutch member 251 is a worm gear 253 provided with suitable means for cdo'peration with the clutch member 251 when desired, and in a manner to be hereinafter described. Operatively connected with said worm gear 253 is shown a worm 254, fast to the shaft 255, which also has fixed to it a gear 256 ineshing with the gear 257, loosely carried on the shaft 216. In fixed relation to the said gear 257 is shown a clutch member 258 capable of being operatively connected to clutch member 259, which is fixed to the gear 183. Actuating and controlling mechanisms are shown comprising a piston, in cylinder 210, the pistonv being operatively connected with shaft 183 in a manner substantially similar to that described for the operation of clutch members 181 and 182 and need not be explained in further detail. It will be understood that the actuation of the. piston 211 will cause the clutch members 256 and 259 to be operatively connected, and through gear 184, shaft 185, gears 186, 187 and 188, to gether with clutch mechanism 190 and the motor 191, which together with the connectin'g mechanism just described will give the desired movements to the bridge 230.

In certain aspects of the invention, means are provided for effecting the various movements and .feeds of the bridge 174 and of the bridge 230, and the combined feed or progression of said bridges. Such means are illustrated as comprising supports 265 and 266 on which are conveniently mounted flanged rollers 267 and 268, on which rollers the members 170 and 171, supporting the bridge 174, are guided and travel. As previously indicated the Worms 177 and 178 working in rack teeth 172 and 173, of the members '170 and 171, progress said members 17 0 and 171 to and fro, along said series of rollers 267 and 268, or hold said members at rest thereon. Y Upon the supports 265 and 266 are carried rails 269 and 270, said rails not only acting as guides for the members 17 0 and 171 but also as supports and guides for the bridge 230, said bridge being arranged to travel thereon. Rollers 271 and 272 are shown attached to the bridge 2'30, and traveling on the faceof the rails 269 and 270. Similar rollers 273 and 274 are conveniently arranged to rotate and bear" upon the edges of the rail, while like rollers 275 and 276 are also mounted on said bridge 230' and bear upon the under side of the rail. It will thus be seen that the bridge 230 is held in alinement during both its independent and combined movements.

In the present embodiment the bridge 230 is utilized to carry the work toward the bridge 17 4, and also to firmly press the work and hold same against said bridge 174 through its contact head 17 5; The form of means provided for this, in connection with the parts hereinbefore and hereinafter described, consists of a contact head 280', shown in detail in Figs. 3 and 38, slidably mounted, in guide 281 fixed to the bridge 230. For controlling the movement relatively to the bridge 17 4, in the direction of travel, there is shown a spring 283, conveniently coiled about rod 282 of said head 280. Any desired tension may be given to the said. spring 283 by means of the threaded piece 284. A shoulder 285 on the head 280 positions said head with relation to the work.

The bridges 174 and 230, as previously indicated are movable either independently the bridge 174. These two bridges and the connecting mechanism-thus form, as already indicated, a carriage for firmly holding and controlling the work, both during its progression and while the operations are being performed thereon. When the carriage is progressed by the worms 177 and 178, the cables 240 and 241 travel idly as the drums 246 and 247 are not then operatively connected with the driving means therefor. It will be understood that the clutch members 181 and 182 and 188, 190 are at this time in engagement, thus operatively connecting the worms 177 and 178 with the motor 1.91, through connections hereinbefore described.

.As it may be desired to prevent the travel of the bridges 17 4 and 230 at the same time, the structure and the manner of operation of clutch members 181, 182 and 216, 259 shown herein, provide a means for positively obtaining such conditions.

One feature of the invention has for its object the independent bridge movements previously referred to. Suitable means are providedfor effecting the temporary disengagement of the dogs 231 and 232 from their racks and as illustrated comprise spring pressed latches 290 and 291, pivotally mounted on the bridge 230 and conveniently arranged to be in operative positions with pins or lugs 292 and 293, carried respectively by the dogs 231 and 232. In position to control'the release of these latches 290 and 291,, there are shown levers 294 and 295, pivotally attached to the bridge 230 one end of each adapted to contact the respective latches 294 and 295, and the other ends being arranged to be actuated by the projection of rod 282, attached to the head 280. Suitable means are also provided for causing the release of toothed dogs 231 and 232 from their racks at the end of the travel, such means consisting of cam arms 296 and 297, pivotally mounted and so connected and arranged, that when the bridge reaches the desired extreme position at the end of the progressmg movement, said cam arms 296 and 297 will throw said dogs 231 and 232 out of engagement with racks 172 and 173. During said operation the latches 290 and 291 engage pins 292 and 293 and thus maintain the disengagement of said dogs and racks, until released when desired.

In accordance withone feature of the invention, distance indicating devices are provided that may, at certain times if desired, control the position of the work progressively, and with respect to the tool-equipped means in order that the location of the operations upon said work may correspond to any desired and predetermined position, both relatively to one another and to an end or face,v of the /work. For this purpose these devices {are conveniently placed in operative relation with the work and the progressing means, and the illustrated form thereof comprises a scale 300 fixed upon the member 170 see Figs. l5, 16, 17 and 17*. A scale 301 is shown fixed to a member 302 in a suitable manner. Said member 302 is shown of convenient shape such as of T section bearing in a groove or slot 303, underneath the shoulder formed thereon and fixed to part of the member 170. The scale 301 and member 302 are slidable along the slot 303 and relatively movable with respect to the fixed scale 300. In definite relation to the scale 301 is shown a suitable stop block 304, and means are provided for positioning a face 305 of said stop block 304 in definite relation with the scale 300. Said face 305 also bears a definite relation to the scale 301 at all times during progression. Means are also provided for firmly clamping the stop 304 relatively to the scale 300 and in the present form of such means, the block 304 is provided with teeth 306 which are adapted to engage with teeth 307, fixed relatively to the scale 300. The block 304 engages by pins 308 and 309 in annular groove 310 in a member 311 threaded on a stud 312. Fixed to the member 311 is an arm 313. It will be understood therefore, that by moving the arm 313 in one direction or the other, the block 304 through the teeth 306 and 307, may be brought into firm engagement and fixed relation with the member 170. This will serve to bring the face 305 into definite relation with a desired point on the scale 300. If desired the teeth 306 and 307 may correspond to divisions on the respective scales, thereby bringing the surface 305 to a definite division of the scale each time it is set.

According to another feature of the invention means are provided, cooperatmg with the foregoing means, for automatically positioning the work in accordance with the distance indications to which said indicating' means are set. In the illustrated form thereof an arm, or other suitable member 315 is shown fixed to a support 316 provided with a tongue 317 Working in a groove 318 in member 170. The support 316 is provided with a face 319 arranged to contact with the face 305 in the block 304. Means are also provided for fixing the support 316 firmly in position when desired, and also for releasing it for movement along its guideway or slot. In the form of said means shown herein a T shaped piece 320 is shown bearing under shoulders in the slot 318. The member 320 is shown having a projecting part 321 to which is connected by a pivot 322 a lever 323. Said lever 323 is provided with a surface 324 eccentric to the pivot 322. The support 316 is shown provided on its lower surface with teeth 325 which engage teeth 307. The said support 316 is also shown provided with pins 326 engaging a suitably shaped slot 327 in the lever 323. It

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